async def _put(self, key: datastore.Key,
value: datastore.abc.ReceiveChannel[T_co],
**kwargs: typing.Any) -> None:
"""Stores the object `value` named by `key`.
DirectoryTreeDatastore stores a directory entry.
"""
await super()._put(key, value, **kwargs)
# ignore root
if key.is_top_level():
return
# Add entry to directory
dir_key = key.parent.instance('directory')
await super().directory_add(dir_key, key, create=True)
